Richard smith



(No Model.)

- I B. SMITH.

MIXING APPARATUS.

No. 495,603. Patented Apr. 18, 1893.

Unites TSTES ,ranr rricni RICHARD SMITH, or siinnnriooun, cannon.

Maxine APPARATUS.

SPEGIFIGATibN formingpart of Letters Patent No. 495,603, date'd'April 18, 1893. Application filed September 12,1891. Renewed February 14, 1393. Serial lilo. 4432.331. {No modeLl To all whom it may concern:

Be it known that I, RICHARD SMITH, a citizen of the Dominion of Canada, residing at Sherbrooke, in the county of Sherbrooke and Prov-1 paratus employed in mixing liquids or semiliquids, as paints and like substances to render them homogeneous in character.

f The object of'my prescntimprovement s is: to enforce the circulation, and render it'th'orough even when the rotaryhead'is moving slowly. In some instances this peculiar action,-a slow motion of the agitator accompanied by active circulation, is very necessary.

The drawings herewith presented represent in Figure 1.a plan,and Fig. 2. a vertical section of an agitator embodying my invention, on

. linens, a, in Fig.1. Fig. 3 isa side view in elevation.

This invention relates to that class of stirring apparatus in which the rotary head is composed of an upper annular plate and a lower disk movingin' unison; further in such construction that the liquid in motion has a central downward inflow or feed, and a circumferential outiiow or discharge, combined with an upward movement.

In the drawings A represents the revoluble head or agitator which is mounted on a vertical shaft 2 suitably stepped insome receptacle (not shown) but adapted to. contain liq uids. Said agitator is composed of a lower imperforate circular disk 3 having an upraised center preferably cone-shaped to impart a downward flow outwardly to the liquid in process of stirring. The outer portion of said disk is fluted or formed with aseries of alternate elevations or ribs 4 and of grooves or depressions 4', semi-circular or oval in crossscction, and prefefably tapering toward the outer edge or cir cumference of the disk.

Above said disk is secured an annular ring curved. strip? It" will or plate 5, of similar constructionto the disk,

that is corrugated or formed with alternating ribs and depressions, respectivelyt, 6, the

ribs 6"co eperating with the depressions a in the annuijar plate to create passages of channels Z. By the contact of the ribs on the bottom disk with the depressions on the annul'ar plate proper supportv is altorded' said plate and divisional partitions are created to compel the liquid to pass outwardly to the circumference. Since the passages 7 taper outwardly to the circumference or are-of the least diameter at their discharge ends, the liquid passing through is expedited, and the I circulation increased.

In the drawings thedisk and plat are shown as circular,-the disk being slightly dished, while the annular plate is formed from a seriftnat tli'e ribs formed by the corrugations on the upper surface of the annular-plate serve toimpel the liq id in contact therewith outwardly, and thus they perform the same duty as would a curved or radial rib upon a flat plate. The plate 5. is annular and does not extend inwardly to the'shaft hence an opening 8 is created by which liquid is permitted to pass down. and escapes-outwardly through the passages 7.

The operation is as follows, assuming that rotation has been given to the shaft and agitator, and that the latter is immersed in. the liquid to be stirred: The particles composing. such liquid, and in contact with the agitator at once have centrifugal action imparted to them, those at the center advancingdown wardly and outwardly through the opening 8 about the conical center, whence they pass through the tapered channels 7 to the circum- 9o 1. In apparatus for'stirring the eombinarco tion with a revoluble shaft, of an agitator or head affixed therenpon,'oomposed of alower disk having an upraised conical center, and an annular plate each above the disk, said disk and plate being corrugated and the co?- rugations forming radial passages, when the disk and plate are put together substantially as specified. I

2. In combination with a rotary shaft, and a lower disk affixed to said shaft and having an upraised center with converging ribs and 3. In combination with a lower disk and the alternate elevations and depressions 'iadiaily thereof, an annular plate similarly constructed and above ems disk, the depressions in the disk eoimziding with the elevations in the plate and creating passages, substantially as stated.

In testimony whereof Isilix my signatuie in presence of two Wl'CHSSSGS,

RICHARD SMiTi-I.

Witnesses:

H. E. LODGE, Fsimois U STANWOOD. 

